Convert Millimeters to Meters
1 millimeter (mm) equals 0.001 meters (m).
1 mm = 0.001 m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millimeter to meter converter to paste a column from Excel.
How to Convert Millimeter to Meter
- 1 mm = 0.001 m
- 1 m = 1000 mm
- Example: convert 15 mm to m: 15 mm = 15 × 0.001 m = 0.015 m
Formula
m = mm ÷ 1000
Derivation from SI units:
- 1 mm = 10⁻³ m
- SI base unit: the distance light travels in vacuum in 1/299 792 458 s
Both units are defined exactly, so the factor is exact. Millimeter definition: millimeter; Meter definition: meter.
Worked examples
- A reading of 8 mm converts to 0.008 m.
8 mm × 0.001 = 0.008 m - A value of 30 mm is 0.03 m.
30 mm × 0.001 = 0.03 m
Millimeter to Meter conversion table
| Millimeters (mm) | Meters (m) |
|---|---|
| 0.1 mm | 0.0001 m |
| 0.5 mm | 0.0005 m |
| 1 mm | 0.001 m |
| 2 mm | 0.002 m |
| 3 mm | 0.003 m |
| 5 mm | 0.005 m |
| 6 mm | 0.006 m |
| 8 mm | 0.008 m |
| 10 mm | 0.01 m |
| 12 mm | 0.012 m |
| 15 mm | 0.015 m |
| 16 mm | 0.016 m |
| 20 mm | 0.02 m |
| 25 mm | 0.025 m |
| 25.4 mm | 0.0254 m |
| 30 mm | 0.03 m |
| 50 mm | 0.05 m |
| 75 mm | 0.075 m |
| 100 mm | 0.1 m |
| 150 mm | 0.15 m |
| 300 mm | 0.3 m |
| 500 mm | 0.5 m |
| 1000 mm | 1 m |
Where it's used
Millimeters are used for engineering drawings and machining tolerances, while meters appear in building, room and land dimensions. Both measure length and distance, so the conversion is a fixed factor.
Millimeter to other length units
| Conversion | 1 mm equals |
|---|---|
| millimeter to meter | 0.001 m |
| millimeter to kilometer | 0.000001 km |
| millimeter to centimeter | 0.1 cm |
| millimeter to micrometer | 1000 µm |
| millimeter to nanometer | 1000000 nm |
| millimeter to angstrom | 10000000 Å |
| millimeter to mile | 6.213711922 × 10⁻⁷ mi |
| millimeter to yard | 0.001093613298 yd |
| millimeter to foot | 0.003280839895 ft |
| millimeter to inch | 0.03937007874 in |
| millimeter to mil | 39.37007874 mil |
| millimeter to nautical mile | 5.399568035 × 10⁻⁷ nmi |
Frequently asked questions
How many meters are in 1 millimeter?
1 mm = 0.001 m.
How do I convert millimeters to meters?
Multiply the value in mm by 0.001, or divide it by 1000. For example, 15 mm × 0.001 = 0.015 m.
Is the mm to m conversion exact?
Yes. Both units are defined exactly, and 1 mm is exactly 0.001 m.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Section 2.3.1, base unit definitions.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millimeters to Meters. Retrieved October 17, 2026, from https://scientificconverters.com/length/millimeters-to-meters/
IEEE
Scientific Converters, "Convert Millimeters to Meters," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/millimeters-to-meters/